#include "StdAfx.h"
#include "UIText.h"

namespace DuiLib
{
    IMPLEMENT_DUICONTROL(CTextUI)

    CTextUI::CTextUI() : m_nLinks(0), m_nHoverLink(-1)
    {
        m_uTextStyle = DT_WORDBREAK;
        m_rcTextPadding.left = 2;
        m_rcTextPadding.right = 2;
        ::ZeroMemory(m_rcLinks, sizeof(m_rcLinks));
    }

    CTextUI::~CTextUI()
    {
    }

    LPCTSTR CTextUI::GetClass() const
    {
        return _T("TextUI");
    }

    LPVOID CTextUI::GetInterface(LPCTSTR pstrName)
    {
        if( _tcsicmp(pstrName, DUI_CTR_TEXT) == 0 ) return static_cast<CTextUI*>(this);
        return CLabelUI::GetInterface(pstrName);
    }

    UINT CTextUI::GetControlFlags() const
    {
        if( IsEnabled() && m_nLinks > 0 ) return UIFLAG_SETCURSOR;
        else return 0;
    }

    CDuiString* CTextUI::GetLinkContent(int iIndex)
    {
        if( iIndex >= 0 && iIndex < m_nLinks ) return &m_sLinks[iIndex];
        return NULL;
    }

    void CTextUI::DoEvent(TEventUI& event)
    {
        if( !IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN && event.Type < UIEVENT__MOUSEEND ) {
            if( m_pParent != NULL ) m_pParent->DoEvent(event);
            else CLabelUI::DoEvent(event);
            return;
        }

        if( event.Type == UIEVENT_SETCURSOR ) {
            for( int i = 0; i < m_nLinks; i++ ) {
                if( ::PtInRect(&m_rcLinks[i], event.ptMouse) ) {
                    ::SetCursor(::LoadCursor(NULL, MAKEINTRESOURCE(IDC_HAND)));
                    return;
                }
            }
        }
        if( event.Type == UIEVENT_BUTTONDOWN || event.Type == UIEVENT_DBLCLICK && IsEnabled() ) {
            for( int i = 0; i < m_nLinks; i++ ) {
                if( ::PtInRect(&m_rcLinks[i], event.ptMouse) ) {
                    Invalidate();
                    return;
                }
            }
        }
        if( event.Type == UIEVENT_BUTTONUP && IsEnabled() ) {
            for( int i = 0; i < m_nLinks; i++ ) {
                if( ::PtInRect(&m_rcLinks[i], event.ptMouse) ) {
                    m_pManager->SendNotify(this, DUI_MSGTYPE_LINK, i);
                    return;
                }
            }
        }
        if( event.Type == UIEVENT_CONTEXTMENU )
        {
            return;
        }
        // When you move over a link
        if( m_nLinks > 0 && event.Type == UIEVENT_MOUSEMOVE && IsEnabled() ) {
            int nHoverLink = -1;
            for( int i = 0; i < m_nLinks; i++ ) {
                if( ::PtInRect(&m_rcLinks[i], event.ptMouse) ) {
                    nHoverLink = i;
                    break;
                }
            }

            if(m_nHoverLink != nHoverLink) {
                m_nHoverLink = nHoverLink;
                Invalidate();
                return;
            }      
        }
        if( event.Type == UIEVENT_MOUSELEAVE ) {
            if( m_nLinks > 0 && IsEnabled() ) {
                if(m_nHoverLink != -1) {
                    m_nHoverLink = -1;
                    Invalidate();
                    return;
                }
            }
        }

        CLabelUI::DoEvent(event);
    }

    SIZE CTextUI::EstimateSize(SIZE szAvailable)
    {
        CDuiString sText = GetText();
        RECT m_rcTextPadding = GetTextPadding();

        RECT rcText = { 0, 0, m_bAutoCalcWidth ? 9999 : GetManager()->GetDPIObj()->Scale(m_cxyFixed.cx), 9999 };
        rcText.left += m_rcTextPadding.left;
        rcText.right -= m_rcTextPadding.right;

        if( m_bShowHtml ) {   
            int nLinks = 0;
            CRenderEngine::DrawHtmlText(m_pManager->GetPaintDC(), m_pManager, rcText, sText, m_dwTextColor, NULL, NULL, nLinks, m_iFont, DT_CALCRECT | m_uTextStyle);
        }
        else {
            CRenderEngine::DrawText(m_pManager->GetPaintDC(), m_pManager, rcText, sText, m_dwTextColor, m_iFont, DT_CALCRECT | m_uTextStyle);
        }
        SIZE cXY = {rcText.right - rcText.left + m_rcTextPadding.left + m_rcTextPadding.right,
            rcText.bottom - rcText.top + m_rcTextPadding.top + m_rcTextPadding.bottom};

        if (m_bAutoCalcWidth)
        {
            m_cxyFixed.cx = MulDiv(cXY.cx, 100.0, GetManager()->GetDPIObj()->GetScale());
        }

        return CControlUI::EstimateSize(szAvailable);
    }

    void CTextUI::PaintText(HDC hDC)
    {
        CDuiString sText = GetText();
        if( sText.IsEmpty() ) {
            m_nLinks = 0;
            return;
        }

        if( m_dwTextColor == 0 ) m_dwTextColor = m_pManager->GetDefaultFontColor();
        if( m_dwDisabledTextColor == 0 ) m_dwDisabledTextColor = m_pManager->GetDefaultDisabledColor();

        m_nLinks = lengthof(m_rcLinks);
        RECT rc = m_rcItem;
        rc.left += m_rcTextPadding.left;
        rc.right -= m_rcTextPadding.right;
        rc.top += m_rcTextPadding.top;
        rc.bottom -= m_rcTextPadding.bottom;
        if( IsEnabled() ) {
            if( m_bShowHtml )
                CRenderEngine::DrawHtmlText(hDC, m_pManager, rc, sText, m_dwTextColor, \
                m_rcLinks, m_sLinks, m_nLinks, m_iFont, m_uTextStyle);
            else
                CRenderEngine::DrawText(hDC, m_pManager, rc, sText, m_dwTextColor, \
                m_iFont, m_uTextStyle);
        }
        else {
            if( m_bShowHtml )
                CRenderEngine::DrawHtmlText(hDC, m_pManager, rc, sText, m_dwDisabledTextColor, \
                m_rcLinks, m_sLinks, m_nLinks, m_iFont, m_uTextStyle);
            else
                CRenderEngine::DrawText(hDC, m_pManager, rc, sText, m_dwDisabledTextColor, \
                m_iFont, m_uTextStyle);
        }
    }
}
